They had stratification.
That they were technically proficient.
They had stratification.
They had economic specialization
they had economic specialization
they had economic specialization
They had stratification.
They had stratification.
Only civilizations with a food surplus built them.
Amsterdam
megaliths were built in the neolithic revolution and people could focus on activities other than finding foods. Also because as population grew, groups of people gathered to perform religious ceremonies. This happened because early people learned how to become farmers.
The European Union.
James J. Hill built the Great Northern Railway System
Venice is considered to be built on water.